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| Porpidinia brevispora Yakovchenko & Davydov in Yakovchenko, Davydov, Paukov & Ohmura, 2020. |
Abstract
Porpidinia brevispora sp. nov. from Shikhote-Alin Range, Primorye Territory, Russian Far East is described and illustrated. The new species resembles Porpidinia tumidula morphologically, but is distinct in its spherical to ellipsoid, significantly smaller ascospores that do not overlap in size with those of P. tumidula, as well as a lower hymenium with paraphyses embedded into hyaline gelatinous envelopes, up to 5 µm wide. Porpidinia brevispora inhabits carbonate rocks at low elevations.
Keywords: new taxa, East Asia, Porpidinia tumidula, calciphilous lichen, Shikhote-Alin Range, squamulose growth form, Lichens
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| Porpidinia brevispora (holotype): (A) holotype specimen (LE-L15308); (B) section of thallus; (C) section of apothecium; (D) asci and paraphyses with caps and thick gelatinose envelopes, in lactophenol cotton blue; (E) ascospores. Bars: A=2 mm; B&C=50 µm; D=20 µm; E=10 µm. |
Porpidinia brevispora Yakovchenko & Davydov, sp. nov.
Etymology: The name refers to the small size of ascospores, an essential character distinguishing this species from its closest relative, Porpidinia tumidula.
Lidia Yakovchenko, Evgeny A. Davydov, Alexander Paukov and Yoshihito Ohmura. 2020. Porpidinia brevispora, A New Species and the Second Representative of the Genus Porpidinia (Lecideaceae, Lecanorales) from the Russian Far East. Phytotaxa. 459(1); 75–80. DOI: 10.11646/phytotaxa.459.1.8
